*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-body);background:var(--bg);color:var(--ink);line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
h1,h2,h3,.display{font-family:var(--font-display);letter-spacing:-.02em;line-height:1.08}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 26px}
.eyebrow{font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);font-weight:700}
.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* nav */
nav{position:sticky;top:0;z-index:50;background:rgba(251,249,245,.82);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--font-display);font-weight:800;font-size:19px}
.brand .mark{width:30px;height:30px}
.nav-links{display:flex;gap:28px;font-size:14.5px;font-weight:500;color:var(--ink-soft)}
.nav-links a:hover{color:var(--ink)}
.nav-cta{display:flex;gap:12px;align-items:center}
.btn{font-family:var(--font-body);font-weight:600;font-size:14.5px;border-radius:999px;padding:10px 20px;cursor:pointer;border:1px solid transparent;transition:.25s var(--ease)}
.btn-primary{background:var(--grad);color:#fff;box-shadow:var(--sh-2)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:var(--sh-3)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line-2)}
.btn-ghost:hover{border-color:var(--ink);background:var(--surface)}
.btn-sm{padding:7px 14px;font-size:13px}

/* hero */
.hero{position:relative;padding:74px 0 54px}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:54px;align-items:center}
.hero h1{font-size:clamp(38px,5.4vw,62px);font-weight:800;margin:18px 0 18px}
.hero p.lead{font-size:17.5px;color:var(--ink-soft);max-width:30em;margin-bottom:30px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:26px}
.pill-row{display:flex;gap:10px;flex-wrap:wrap}
.pill{font-size:13px;font-weight:600;color:var(--ink-soft);background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:7px 14px;box-shadow:var(--sh-1)}
.pill b{color:var(--accent)}
.ribbon{position:absolute;left:0;right:0;top:208px;height:120px;z-index:0;opacity:.5;pointer-events:none}
.ribbon path{stroke:url(#rg);stroke-width:2.5;fill:none;stroke-linecap:round}

/* card */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-3);padding:24px;position:relative;z-index:2}
.card-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.card-head .ttl{font-weight:700;font-size:15px}
.badge{font-size:11.5px;font-weight:700;color:var(--accent);background:#FBEFE8;border-radius:999px;padding:4px 10px}
.player{display:flex;align-items:center;gap:14px;margin-bottom:20px}
.play{width:46px;height:46px;border-radius:50%;background:var(--grad);display:grid;place-items:center;flex:0 0 auto;cursor:pointer;box-shadow:var(--sh-2)}
.play svg{width:18px;height:18px;fill:#fff;margin-left:2px}
.wavebars{display:flex;align-items:flex-end;gap:3px;height:38px;flex:1}
.wavebars span{flex:1;background:linear-gradient(var(--accent),var(--accent-cool));border-radius:3px;opacity:.85;animation:eq 1.1s var(--ease) infinite}
.wavebars span:nth-child(odd){animation-delay:.25s}
.wavebars span:nth-child(3n){animation-delay:.5s}
@keyframes eq{0%,100%{height:22%}50%{height:100%}}
.langs{display:flex;gap:8px;flex-wrap:wrap}
.lang{font-size:12.5px;font-weight:600;color:var(--ink-soft);border:1px solid var(--line);border-radius:999px;padding:5px 12px}
.lang.on{color:#fff;background:var(--grad);border-color:transparent}

/* trust */
.trust{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--surface-2)}
.trust-in{display:flex;flex-wrap:wrap;gap:14px 40px;justify-content:center;padding:18px 0;font-size:13.5px;color:var(--ink-soft);font-weight:500}
.trust-in b{color:var(--ink)}

/* sections */
.sec{padding:78px 0}
.sec-head{max-width:34em;margin-bottom:42px}
.sec-head h2{font-size:clamp(28px,3.6vw,40px);font-weight:800;margin:14px 0 12px}
.sec-head p{color:var(--ink-soft);font-size:16px}
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.feat{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:26px;box-shadow:var(--sh-1);transition:.3s var(--ease);position:relative;overflow:hidden}
.feat:hover{transform:translateY(-4px);box-shadow:var(--sh-3);border-color:var(--line-2)}
.feat .ico{width:42px;height:42px;border-radius:12px;background:var(--surface-2);display:grid;place-items:center;margin-bottom:18px}
.feat .ico svg{width:22px;height:22px;stroke:var(--accent);fill:none;stroke-width:1.8}
.feat h3{font-size:18px;font-weight:700;margin-bottom:8px}
.feat p{font-size:14.5px;color:var(--ink-soft)}
.feat .tag{position:absolute;top:18px;right:18px;font-size:11px;font-weight:700;color:var(--accent-cool)}

/* cta + footer */
.cta-band{margin:0 0 80px}
.cta-in{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:48px;display:flex;align-items:center;justify-content:space-between;gap:30px;box-shadow:var(--sh-2);position:relative;overflow:hidden}
.cta-in::before{content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;background:radial-gradient(circle,rgba(221,115,80,.1),transparent 70%);border-radius:50%}
.cta-in h2{font-size:clamp(24px,3vw,34px);font-weight:800;max-width:14em}
.cta-in p{color:var(--ink-soft);margin-top:8px;max-width:30em}
footer{border-top:1px solid var(--line);padding:34px 0;color:var(--ink-soft);font-size:13.5px}
.foot-in{display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px}

/* ===== App / tool ===== */
.app-shell{max-width:960px;margin:0 auto;padding:40px 26px 80px}
.app-head{text-align:center;margin-bottom:30px}
.app-head h1{font-size:34px;font-weight:800}
.app-head p{color:var(--ink-soft);margin-top:8px}
.tabs{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;margin-bottom:30px}
.tab{font-family:var(--font-body);font-weight:600;font-size:14px;border:1px solid var(--line-2);background:var(--surface);color:var(--ink-soft);border-radius:999px;padding:9px 18px;cursor:pointer;transition:.2s var(--ease)}
.tab.active{background:var(--grad);color:#fff;border-color:transparent;box-shadow:var(--sh-2)}
.panel{display:none}
.panel.active{display:block;animation:fade .35s var(--ease)}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.box{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:26px;box-shadow:var(--sh-1)}
.field{margin-bottom:18px}
.field label{display:block;font-weight:600;font-size:14px;margin-bottom:7px}
.field input,.field select,.field textarea{width:100%;font-family:var(--font-body);font-size:14.5px;color:var(--ink);background:var(--bg);border:1px solid var(--line-2);border-radius:var(--r-sm);padding:11px 13px;transition:.2s}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(221,115,80,.15)}
.field textarea{min-height:110px;resize:vertical}
.row{display:flex;gap:14px;flex-wrap:wrap}
.row>.field{flex:1;min-width:200px}
.hint{font-size:12.5px;color:var(--ink-soft);margin-top:6px}
.out{margin-top:18px;font-size:14px}
.out audio{width:100%;margin-top:10px}
.out pre{background:var(--surface-2);border:1px solid var(--line);border-radius:var(--r-sm);padding:14px;overflow:auto;font-size:13px;max-height:240px}
.out .err{color:var(--danger);font-weight:600}
.list-item{display:flex;align-items:center;justify-content:space-between;gap:12px;background:var(--surface-2);border:1px solid var(--line);border-radius:var(--r-sm);padding:12px 14px;margin-bottom:10px}

/* toast */
.toast{position:fixed;left:50%;bottom:28px;transform:translateX(-50%) translateY(20px);background:var(--ink);color:#fff;padding:12px 20px;border-radius:999px;font-size:14px;font-weight:600;opacity:0;pointer-events:none;transition:.3s var(--ease);z-index:99}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* reveal */
.reveal{opacity:0;transform:translateY(16px);transition:.7s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media(max-width:880px){
  .hero-grid{grid-template-columns:1fr;gap:38px}
  .ribbon{display:none}
  .feat-grid{grid-template-columns:1fr}
  .nav-links{display:none}
  .cta-in{flex-direction:column;align-items:flex-start;padding:32px}
}
@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}

/* ===== 已登录态：导航用户区 ===== */
.nav-user{display:flex;align-items:center;gap:12px}
.balance-chip{font-size:13px;font-weight:700;color:var(--accent);background:#FBEFE8;border:1px solid #F2D9CC;border-radius:999px;padding:6px 13px;white-space:nowrap}
.nav-user .nav-link{font-size:14.5px;font-weight:500;color:var(--ink-soft)}
.nav-user .nav-link:hover{color:var(--ink)}
.nav-user .btn[hidden],.nav-cta .btn[hidden],.balance-chip[hidden]{display:none}

/* ===== Modal ===== */
.modal{position:fixed;inset:0;z-index:200;display:flex;align-items:center;justify-content:center;padding:20px;background:rgba(34,29,23,.42);backdrop-filter:blur(3px)}
.modal[hidden]{display:none}
.modal-card{width:min(420px,100%);background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--sh-3);padding:28px;position:relative;animation:pop .28s var(--ease)}
@keyframes pop{from{opacity:0;transform:translateY(10px) scale(.98)}to{opacity:1;transform:none}}
.modal-card h2{font-size:22px;font-weight:800;margin-bottom:4px}
.modal-card .sub{color:var(--ink-soft);font-size:13.5px;margin-bottom:18px}
.modal-close{position:absolute;top:14px;right:16px;border:none;background:none;font-size:22px;line-height:1;color:var(--ink-soft);cursor:pointer}
.modal-close:hover{color:var(--ink)}
.modal .field{margin-bottom:14px}
.modal .field label{font-size:13px;margin-bottom:6px}
.modal .btn{width:100%;justify-content:center;margin-top:6px}
.modal-switch{text-align:center;font-size:13.5px;color:var(--ink-soft);margin-top:14px}
.modal-switch a{color:var(--accent);font-weight:600;cursor:pointer}
.modal-error{display:none;background:#FBEFEC;border:1px solid #F2D2C8;color:var(--danger);font-size:13px;font-weight:600;padding:9px 12px;border-radius:var(--r-sm);margin-bottom:12px}
.modal-error.show{display:block}
.modal-note{font-size:12.5px;color:var(--ink-soft);margin-top:12px;text-align:center}

.oauth-btns{display:flex;gap:10px;margin-bottom:16px}
.oauth-btns .btn{flex:1;display:flex;align-items:center;justify-content:center;gap:8px}
.oauth-ico{width:18px;height:18px}
.divider{display:flex;align-items:center;gap:12px;color:var(--ink-soft);font-size:12.5px;margin:6px 0 16px}
.divider::before,.divider::after{content:"";height:1px;background:var(--line);flex:1}

/* ===== 账户 / 记录表 ===== */
.balance-hero{display:flex;align-items:center;justify-content:space-between;gap:18px;background:linear-gradient(118deg,#FBEFE8,#F7F1E6);border:1px solid var(--line);border-radius:var(--r-md);padding:22px 24px;margin-bottom:26px;flex-wrap:wrap}
.balance-hero .balance-num{font-family:var(--font-display);font-size:40px;font-weight:800;line-height:1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.balance-hero .eyebrow{margin-bottom:4px}
.rec-block{margin-bottom:26px}
.rec-block h3{font-size:16px;font-weight:700;margin-bottom:12px;display:flex;align-items:center;gap:9px}
.rec-block h3 .tag{font-size:11px;font-weight:700;color:var(--ink-soft);background:var(--surface-2);border:1px solid var(--line);border-radius:999px;padding:3px 9px}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r-sm)}
table.rec-table{width:100%;border-collapse:collapse;font-size:13px;min-width:480px}
.rec-table th{text-align:left;font-weight:600;color:var(--ink-soft);background:var(--surface-2);padding:10px 12px;border-bottom:1px solid var(--line)}
.rec-table td{padding:10px 12px;border-bottom:1px solid var(--line);color:var(--ink)}
.rec-table tr:last-child td{border-bottom:none}
.rec-table .num{font-variant-numeric:tabular-nums;font-weight:600}
.rec-table .pos{color:var(--accent-cool)}
.rec-table .neg{color:var(--danger)}
.rec-table .muted{color:var(--ink-soft)}
.empty-row td{text-align:center;color:var(--ink-soft);padding:18px}

/* ===== 购买弹窗的积分包 ===== */
.pack-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-bottom:6px}
.pack{border:1px solid var(--line-2);border-radius:var(--r-md);padding:16px;background:var(--surface);text-align:center;transition:.2s var(--ease);cursor:pointer}
.pack:hover{border-color:var(--accent);box-shadow:var(--sh-2);transform:translateY(-2px)}
.pack .pcredits{font-family:var(--font-display);font-size:22px;font-weight:800;color:var(--ink)}
.pack .pname{font-size:12.5px;color:var(--ink-soft);margin:2px 0 8px}
.pack .pprice{font-size:16px;font-weight:700;color:var(--accent)}
.buy-banner{display:none;background:#FBEFE8;border:1px solid #F2D9CC;color:var(--accent);font-size:13px;font-weight:600;padding:9px 12px;border-radius:var(--r-sm);margin-bottom:14px}
.buy-banner.show{display:block}

/* ===== TTS 双栏（文本 + 参数栏） ===== */
.tts-grid{display:grid;grid-template-columns:1.6fr 1fr;gap:26px;align-items:start}
.tts-side{background:var(--bg);border:1px solid var(--line);border-radius:var(--r-md);padding:18px}
.side-block{margin-bottom:18px}
.side-block:last-child{margin-bottom:0}
.side-block h4{font-size:13px;font-weight:700;color:var(--ink-soft);letter-spacing:.04em;margin-bottom:9px}
.side-select{width:100%;font-family:var(--font-body);font-size:14px;color:var(--ink);background:var(--surface);border:1px solid var(--line-2);border-radius:var(--r-sm);padding:9px 11px}
.side-select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(221,115,80,.15)}
.mini-select{font-family:var(--font-body);font-size:12.5px;color:var(--ink);background:var(--surface);border:1px solid var(--line-2);border-radius:999px;padding:4px 10px}
.tts-foot{display:flex;align-items:center;gap:14px;margin-top:2px;flex-wrap:wrap}
.char-count{font-size:12.5px;color:var(--ink-soft);font-variant-numeric:tabular-nums}
.char-count.over{color:var(--danger);font-weight:700}
.cost-est{font-size:12.5px;color:var(--accent);font-weight:600;background:#FBEFE8;border-radius:999px;padding:3px 11px}
.flex-sp{flex:1}
.ctl{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.ctl-name{font-size:13px;font-weight:600;color:var(--ink);flex:0 0 auto}
.ctl input[type=range]{flex:1;accent-color:var(--accent);height:20px}
.ctl-val{font-size:12.5px;font-weight:700;color:var(--accent);min-width:44px;text-align:right;font-variant-numeric:tabular-nums}
.ctl-row{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:10px;background:var(--surface);border:1px solid var(--line);border-radius:999px;padding:5px 6px 5px 14px}
.seg{display:inline-flex;border-radius:999px;overflow:hidden;gap:2px}
.seg button{border:none;background:transparent;padding:5px 15px;font-family:var(--font-body);font-size:12.5px;font-weight:600;color:var(--ink-soft);cursor:pointer;border-radius:999px;transition:.15s}
.seg button.on{background:#FBEFE8;color:var(--accent);font-weight:700}
@media(max-width:820px){.tts-grid{grid-template-columns:1fr}}

/* ===== 上传拖拽区 ===== */
.dropzone{border:1.5px dashed var(--line-2);border-radius:var(--r-md);background:var(--bg);padding:34px 22px;text-align:center;transition:.2s var(--ease);cursor:pointer;position:relative}
.dropzone:hover,.dropzone.drag{border-color:var(--accent);background:#FDF6F1}
.dropzone.compact{padding:22px}
.dz-art{width:150px;height:auto;margin:0 auto 8px;display:block}
.dz-t1{font-size:15px;font-weight:600;color:var(--ink);margin-bottom:13px}
.dz-actions{display:flex;gap:10px;justify-content:center;margin-bottom:13px}
.dz-actions .btn{display:inline-flex;align-items:center;gap:7px}
.dz-formats{font-size:12px;color:var(--ink-soft)}

/* 已选文件卡 */
.file-card{display:flex;align-items:center;gap:12px;background:var(--surface-2);border:1px solid var(--line);border-radius:var(--r-sm);padding:11px 14px;margin-top:12px}
.file-card[hidden]{display:none}
.fc-ico{width:34px;height:34px;border-radius:10px;background:#FBEFE8;color:var(--accent);display:grid;place-items:center;flex:0 0 auto}
.fc-info{flex:1;min-width:0;display:flex;flex-direction:column}
.fc-info b{font-size:13.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.fc-info .hint{margin-top:1px}

/* 时长标尺（10s 可用 / 30s 已足够 / 90s 推荐） */
.dur-timeline{margin-top:14px}
.dur-timeline[hidden]{display:none}
.dt-bar{position:relative;height:10px;border-radius:999px;background:linear-gradient(90deg,#EFE9DF 11.1%,#F3E4D3 11.1%,#F3E4D3 33.3%,#EAF0EC 33.3%);border:1px solid var(--line)}
.dt-fill{position:absolute;left:0;top:0;bottom:0;border-radius:999px;background:var(--grad);min-width:4px;transition:width .3s var(--ease)}
.dt-marker{position:absolute;top:-6px;bottom:-6px;width:2px;background:var(--ink-soft);opacity:.5;transform:translateX(-1px)}
.dt-marker i{position:absolute;top:calc(100% + 4px);left:50%;transform:translateX(-50%);font-style:normal;font-size:10.5px;line-height:1.35;color:var(--ink-soft);text-align:center;white-space:nowrap}
.dt-marker.end i{transform:translateX(-100%);left:auto;right:-2px}
.dt-caption{margin-top:30px;font-size:12.5px;color:var(--ink-soft)}
.dt-caption b{color:var(--accent)}